![]() ![]() University of Oslo, 2008.Īndré P, Rivière N,Waeselynck H. Operational analysis of sequence diagram specifications. Trace semantics of interactions in UML 2.0. the 4th International Conference on Integrated Formal Methods, April 2004, pp.481-500. Using UML sequence diagrams as the basis for a formal test description language. The many meanings of UML 2 sequence diagrams: A survey. The transformation of UML 2.X SD into the formal method Event-B allows us to perform several kinds of verification including simulation, trace acceptance, verification of properties, and verification of refinement relation between SDs. Our modeling approach emphasizes computation of causal relations, guard handling and transformational semantics into Event-B. Then, we propose a transformational semantics in Event-B. In this paper, we first extend our semantics, proposed in our previous work indeed, we propose new rules for the computation of causal relations for SD with par and strict CFs (dedicated to modeling concurrent and strict behaviors respectively) as well as their nesting. We also addressed the issue of the evaluation of the interaction constraint (guard) for guarded CFs, and the related synchronization issue. The proposed semantics is based on partial order theory relations that permit the computation of the precedence relations between the events of an SD with nested CFs. We proposed in our previous work semantics covering the most popular combined fragments (CF) of control-flow alt, opt, loop and seq, allowing to model alternative, optional, iterative and sequential behaviors respectively. ![]() This justifies the considerable number of research studies intending to define formal semantics of UML SDs. Moreover, SD is a semi-formal language, and it does not support the verification of the modeled system. They mainly concern ambiguities of the interpretation of SDs, and the computation of causal relations between events which is not specifically laid out. However, there are several issues related to the standard semantics of UML 2.X SD proposed by the Object Management Group (OMG). UML 2.X sequence diagrams (SD) are among privileged scenarios-based approaches dealing with the complexity of modeling the behaviors of some current systems. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |